After waiting long time for the update finally I've seen my S8 in completed list. So I've done the update by myself using Odin...When it comes to update policy Samsung always **bleep**.
So far Samsung never supported these much as they contributed for S8. so the expectation is day dream only. but if they announced Q. the call gonna be the head to head challenge to Apple support. let's see what happens with the S8 and S9.